Pipe-wrench.



C. W. SIEVERT.

PIPE WRENCH.

APPLICATION FILED NOV. 11, 1908.

Patented Mar. 23, 1909.

IN VENTUR M%M PI PE JVRENCH.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed November 11, 1908. Serial No. $62,085.

['0 all whom it may concern.-

Be it known that 1, CHARLES i, Sinvica'r, a citizen of the UnitedStates, residing in the city of Los Angeles and county of Los Angeles,State of (,aliforna, have invented new and useful Improvements inPipe-\Vrenches, of which the following is a specification.

It isthe object of my invention to construct a pipe wrench of cheapconstruction,

efficient operation and which can be quickly adjusted to fit upon pipesof ditl'erentv sizes. I accoin lish this object by the wrench describedierein and illustrated in the accoim panying drawings in which;

' Figure 1 1s a side elevation partly in section of my irn roved pipewrench. Fig. 2 is outer end of which is the fixed jaw 6 which is vatedas shown in- Fig. 1

The rocking jaw is preferably of tool steel referably made integral withthe handle. his jaw is provided with a jacket? provided with teeth 8,which is removably secured by rivet 9. This jacket is of hardened steelan d when thetecth become dull or worn out, by removing the rivet 9 anew jacket can be placed upon the jaw. If desired the jacket could beomitted and the teeth made in the face of the jaw, but I prefer the useof the jacket, as the handle and fixed jaw can be more easily dropforged without teeth on the fixed jaw, than with teeth. There is agreater wear on the teeth than on any other part of the wrench, and itistherefore advantageous and economical to be able to replace them whendull and worn out.

10 is the rocking jaw of the wrench which is provided with a pin 11 inthe top thereof. This pin projects into a recess 12 in'the top of therocking jaw container 13 to hold the jaw from accidentally separatingfrom the container 14 is a spring secured to the lower face of therocking jaw at the rear'end thereof, and normally keeps the front end ofthe jaw eleand the teeth 15 are preferably tempered. The rocking jawcontainer slides upon the handle and is provided on the upper surface.of the front portion of the lower part thereof,

of the drawings.

with ratchet teeth 16 which engage with like ratchet teeth 17 inthelower edge of the handle. At the rearof the lower sideof thecontainer is a release lever or handle 18 the front portion of whichcontacts with the lower surface -of the handle. When it is desired toadjust the rocking jaw by applying ressure to the rear end of thecontainer handle the ratchet teeth thereof are moved out of engagementwith the .ratchct teeth of the handle, and the container, carrying therocking jaw, can be moved toward or from the fixed jaw as desired toadjust it for the size bf pipe upon which it is to beused. A screw 19 inthe upper surface of the handle limits the rearward motionof thecontainer and is so placed that when the container contacts with saidscrew the jaws are opened to their fullest capacity for use upon pipe ofthe largest size upon which the wrench is capable of being used.

In the modification shown in Fig. 2 the lower front portion of thecontainer is pro vided with a removable plate 20 provided with ratchetteeth 21 which engage the ratchet teeth of the handle. This plate may beremovahly secured to the container by screw 22. The object in providingthis plate is that it may be made of tempered steel while the containeris preferably male of cast metal. The outer ends of the jaws arepreferably wider apart than the inner ends rock downward thereby wedgingthe plpebetween the jaws and gripping the pipe most firmly. This motionis produced by the rear end of the shank of the jaw engaging thecontainer which holds it against longrtudinal movement, while the frontend containing the teeth is free to move downward.

The reverse movement of the handle uickly releases the jaws from the pie. The j constitutes the shank of the hired jaw.

By this construction a chea quickly adjusted and efficient pipe wrenc isprovided,

' as the handle, fixed jaw, and rocking jaw can be drop forged of toolsteel and the rocking andle jaw container can be formed.of malleablecast steel or iron.

claim is;

Having'described my invention what I series of ratchet teeth on the hackof the handle extending to near the jaw; a rocking jaw containerslidably mounted on said handle, said container having ratchet teethadapted to engage the ratchet teeth of the handle, said container havinga handle on the lower rear portion thereof, the front end of whichengages the wrench handle and the other portion of which handle normallyprojects away from the wrench handle; a rocking jaw removably containedin said rocking jaw container; means secured to said rocking jaw forremovably securing the same in said container; and means for holding thefront end of the rocking jaw elevated above the wrench handle when theparts are assembled for use.

2. A pipe wrench comprising a handle having a fixed jaw on the outer endthereof and having ratchet teeth on the back of the handle termir'r tingnear the fixed jaw; a-

jacket removahly secured to said fixed jaw,

' said jacket having teeth in its outer face; a

rocking jaw container sli'dably mounted on said wrench handle, a plateremovably secured within the lower front portion of said container, saidplate having ratchet teeth which engage the teeth. of the handle andhold the containeragainst rearward movement; a handle secured. to saidcontainer on the lower rear portion thereof, the front end of whichengages the wrench handle, and the I other portions normally projectaway from. the wrench handle; a rocking jaw removably secured in saidcontainer; and means for' holding thefr'ont end of the rocking jawyieldingly elevated above the wrench handle when the parts areassembled.

3. A pipe wrench comprising a straight handle iaving ratchet teeth inthe back thereof; a fixed jaw on the outer end of said handle projectingaway from the front of the handle; teeth in the face of said fixed jawwhich is toward the rear end of the handle, saidteeth being in a planeinclined to a line perpendicurar to the upper surface of the handle; arocking jaw container s'ljdably mounted on said handle, said containerhavi ing in its lower front portion teeth to ngage the teeth on thehandle; means secured to said container to rock the teeth thereof out ofengagement with the teeth of the handle; and a rocking jaw rockahlysecured in said container, said rocking jaw having teeth normallystanding in a plane inclined to a line perpendicular to the uppersurface of In witness that I claim the foregoing I' v the wrench handle,the teeth in send aws be-

